linux-kernel - Re: [PATCH] mm: setup pageblock_order before it's used by sparse

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Date:	Wed, 18 Jul 2012 17:01:28 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jiang Liu <jiang.liu@...wei.com>
Cc:	Yinghai Lu <yinghai@...nel.org>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Xishi Qiu <qiuxishi@...wei.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	David Rientjes <rientjes@...gle.com>,
	Minchan Kim <minchan@...nel.org>,
	Keping Chen <chenkeping@...wei.com>, linux-mm@...ck.org,
	stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiang Liu <liuj97@...il.com>
Subject: Re: [PATCH] mm: setup pageblock_order before it's used by sparse

On Tue, 2012-07-17 at 17:31 +0800, Jiang Liu wrote:
> Hi Ben,
> 	Any update about this topic?
> 	Thanks!
> 	Gerry

I should have said "long week-end" :-) I'm just back, will look into it
now.

Cheers,
Ben.

> 
> On 2012-7-6 9:24, Benjamin Herrenschmidt wrote:
> > On Thu, 2012-07-05 at 18:00 -0700, Yinghai Lu wrote:
> >> cma, dma_continugous_reserve is referring pageblock_order very early
> >> too.
> >> just after init_memory_mapping() for x86's setup_arch.
> >>
> >> so set pageblock_order early looks like my -v2 patch is right way.
> >>
> >> current question: need to powerpc guys to check who to set that early.
> > 
> > I missed the beginning of that discussion, I'll try to dig a bit,
> > might take me til next week though as I'm about to be off for
> > the week-end.
> > 

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